package com.example.coolweather;

import static com.example.coolweather.constants.Constants.PROVINCE_URL;

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Toast;

import androidx.fragment.app.Fragment;

import com.example.coolweather.databinding.ChooseAreaBinding;
import com.example.coolweather.db.City;
import com.example.coolweather.db.County;
import com.example.coolweather.db.Province;
import com.example.coolweather.util.HttpUtil;
import com.example.coolweather.util.Utility;

import org.jetbrains.annotations.NotNull;
import org.litepal.LitePal;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;

public class ChooseAreaFragment extends Fragment {
    public static final String PROVINCE = "province";
    public static final String CITY = "city";
    public static final String COUNTY = "county";
    ChooseAreaBinding binding;

    public static final int LEVEL_PROVINCE = 0;
    public static final int LEVEL_CITY = 1;
    public static final int LEVEL_COUNTY = 2;

    private int currentLevel = LEVEL_PROVINCE;

    List<Province> provinceList;
    List<City> cityList;
    List<County> countyList;

    private Province selectedProvince;
    private City selectedCity;

    List<String> dataList = new ArrayList<>();
    ArrayAdapter<String> adapter;

    ProgressDialog ProgressDialog;




    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        binding = ChooseAreaBinding.inflate(inflater, container, false);

        adapter = new ArrayAdapter<>(getActivity(), android.R.layout.simple_list_item_1, dataList);

        binding.listView.setAdapter(adapter);

        return binding.getRoot();
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        binding.listView.setOnItemClickListener((parent, view, position, id) -> {
            if (currentLevel == LEVEL_PROVINCE) {
                selectedProvince = provinceList.get(position);
                queryCities();
            } else if (currentLevel == LEVEL_CITY) {
                selectedCity = cityList.get(position);
                queryCounties();

            }else if (currentLevel==LEVEL_COUNTY){
                County county = countyList.get(position);
                String spot=String.format("%s|%s|%s",
                        selectedProvince.getProvinceName(),
                        selectedCity.getCityName(),
                        county.getCountyName());
                String location= county.getWeatherId().substring(2);
                Log.d("test","onActivityCreated："+spot+"|"+location);

                Intent intent=new Intent(getActivity(), WeatherActivity.class);
                intent.putExtra("spot",spot);
                intent.putExtra("location",location);
                startActivity(intent);
                getActivity().finish();

            }
        });
binding.backButton.setOnClickListener(v ->{
    if (currentLevel==LEVEL_CITY){
        queryProvinces();
    }else if (currentLevel==LEVEL_COUNTY) {
        queryCities();
    }
        });


        queryProvinces();

    }

    private void queryCounties() {
        binding.titleText.setText(selectedProvince.getProvinceName()+":"+selectedCity.getCityName());
        binding.backButton.setVisibility(View.VISIBLE);

        countyList = LitePal.where("cityId=?",
                String.valueOf(selectedCity.getId())).find(County.class);
        if (countyList.size() > 0) {

            dataList.clear();
            countyList.forEach(item->{
                dataList.add(item.getCountyName());
            });
            adapter.notifyDataSetChanged();
            binding.listView.setSelection(0);
            currentLevel=LEVEL_COUNTY;


        } else {
            String url=PROVINCE_URL+"/"+selectedProvince.getProvinceCode()+"/"+selectedCity.getCityCode();
            queryFromServer(url, COUNTY);
        }

    }

    private void queryCities() {
        binding.titleText.setText(selectedProvince.getProvinceName());
        binding.backButton.setVisibility(View.VISIBLE);

        cityList = LitePal.where("provinceId=?",
                String.valueOf(selectedProvince.getId())).find(City.class);
        if (cityList.size() > 0) {

            dataList.clear();
            cityList.forEach(item->{
                dataList.add(item.getCityName());
            });
            adapter.notifyDataSetChanged();
            binding.listView.setSelection(0);
            currentLevel=LEVEL_CITY;


        } else {
            String url=PROVINCE_URL+"/"+selectedProvince.getProvinceCode();
            queryFromServer(url, CITY);
        }
    }





    private void queryProvinces() {
        binding.titleText.setText("中国（CHINA）");
        binding.backButton.setVisibility(View.GONE);

        provinceList = LitePal.findAll(Province.class);
        if (provinceList.size() > 0) {

            dataList.clear();
            provinceList.forEach(item->{
                    dataList.add(item.getProvinceName());
        });
            adapter.notifyDataSetChanged();
            binding.listView.setSelection(0);
            currentLevel=LEVEL_PROVINCE;


        } else {
            queryFromServer(PROVINCE_URL, PROVINCE);
        }
    }

    private void queryFromServer(String url, String type) {
        Log.d("test", url);

        showProgressDialog();//加载进度条

        HttpUtil.sendOkHttpRequest(url, new Callback() {
            @Override
            public void onFailure(@NotNull Call call, @NotNull IOException e) {
                getActivity().runOnUiThread(() -> {
                    Toast.makeText(getContext(), "访问网络失败", Toast.LENGTH_SHORT).show();
                    closeProgressDialog();
                });

            }

            @Override
            public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
                String strJson = response.body().string();
                Log.d("test", "onResponse:" + strJson);
                boolean result = false;
                if (PROVINCE.equals(type)) {
                    result = Utility.handleProvinceResponse(strJson);
                } else if (CITY.equals(type)) {
                    result = Utility.handleCityResponse(strJson, selectedProvince.getId());
                } else if (COUNTY.equals(type)) {
                    result = Utility.handleCountyResponse(strJson, selectedCity.getId());
                }

                if (result) {
                    if (PROVINCE.equals(type)) {
                        getActivity().runOnUiThread(() -> {
                            queryProvinces();
                        });
                    } else if (CITY.equals(type)) {
                        getActivity().runOnUiThread(() -> {
                            queryCities();
                        });
                    } else if (COUNTY.equals(type)) {
                        getActivity().runOnUiThread(() -> {
                            queryCounties();
                        });

                    }
                    closeProgressDialog();
                } else {
                    getActivity().runOnUiThread(()->{
                        Toast.makeText(getContext(),
                                "数据解析失败",Toast.LENGTH_SHORT).show();
                        closeProgressDialog();
                    });
                }
            }
        });
    }

    private void closeProgressDialog() {
        if (ProgressDialog!=null){
            ProgressDialog.dismiss();
        }

    }

    private void showProgressDialog() {
        if (ProgressDialog==null){
            ProgressDialog=new ProgressDialog(getContext());
            ProgressDialog.setMessage("正在访问网络，请稍后！");
            ProgressDialog.setCancelable(false);
    }
        ProgressDialog.show();
}}

